add copyright for rvm

ref issue sorin-ionescu#207

copied from https://github.com/rvm/rvm/blob/master/LICENSE 2015-09-30

src/_rvm

@@ -1,11 +1,26 @@
 #compdef rvm
 # ------------------------------------------------------------------------------
+# Copyright (c) 2009-2011 Wayne E. Seguin
+# Copyright (c) 2011-2015 Michal Papis
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------------------------
 # Description
 # -----------
 #
 #  Completion script for rvm (https://rvm.beginrescueend.com/).
 #
-#  Source: https://github.com/wayneeseguin/rvm/blob/master/scripts/zsh/Completion/_rvm
+#  Source: https://github.com/rvm/rvm/blob/master/scripts/extras/completion.zsh/_rvm
 #
 # ------------------------------------------------------------------------------
 # Authors